2025_04W

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Geo IR

85-92GHz

Date/Time_(UTC)

Source

Sensor

Vmax(kts)

ARCHER Lat

Lon

Geo-ref Lat

Lon

50% cert. rad.

95% cert. rad.

Eye diam (deg)

% cert. of eye

20250709 00:30:00

Metop-C

ASCAT

20.0

***

20250708 21:33:27	GMI	85-92GHz	21.0	***	***	***	***	***	***	1.60	***
20250708 21:33:27 *	GMI	37GHz	21.0	43.38	153.89	43.27	153.59	0.53	1.49	2.70	***
20250708 21:07:14	SSMIS-16	85-92GHz	21.2	***	***	***	***	***	***	3.00	***

20250708 17:47:14

SSMIS-18

85-92GHz

22.6

***

3.00

***

20250708 10:36:00	Metop-C	ASCAT	25.0	40.81	150.58	40.97	150.83	3.36	9.49	***	***
20250708 10:33:00	Metop-C	ASCAT	25.0	40.10	151.17	40.27	151.43	3.36	9.49	***	***

20250708 09:42:00 *

Metop-A

ASCAT

25.0

41.78

151.81

41.52

151.49

0.49

1.38

***

20250708 06:23:26 *	GMI	85-92GHz	25.0	40.10	151.33	39.90	151.09	0.35	0.99	0.50	2.0
20250708 06:23:26	GMI	37GHz	25.0	***	***	***	***	***	***	0.90	***
20250708 05:26:49	SSMIS-18	85-92GHz	25.0	39.78	150.61	39.80	150.63	0.41	1.17	0.50	1.3

20250708 00:00:00 *	Metop-A	ASCAT	25.0	39.50	148.52	39.40	148.43	0.40	1.12	***	***
20250707 23:12:00	Metop-C	ASCAT	25.0	***	***	***	***	***	***	***	***
20250707 22:13:26	GMI	85-92GHz	25.0	39.07	149.26	39.34	149.47	0.59	1.68	2.80	0.3
20250707 22:13:26 *	GMI	37GHz	25.0	39.22	149.45	39.49	149.66	0.42	1.18	3.00	***

20250707 16:04:05	AMSR2	85-92GHz	26.6	37.47	148.21	37.80	148.32	0.38	1.08	2.50	2.6
20250707 16:04:05 *	AMSR2	37GHz	26.6	37.62	148.21	37.95	148.32	0.26	0.73	0.50	***

20250707 10:03:00

Metop-A

ASCAT

31.6

***

20250707 07:10:51	SSMIS-17	85-92GHz	35.0	35.94	148.24	36.12	148.15	0.30	0.86	2.20	2.6
20250707 07:08:27	GMI	85-92GHz	35.0	35.93	148.05	36.12	147.96	0.31	0.86	2.40	3.4
20250707 07:08:27 *	GMI	37GHz	35.0	35.98	148.30	36.17	148.21	0.21	0.60	1.10	***

20250707 05:39:08

SSMIS-18

85-92GHz

35.6

35.60

148.06

35.58

148.07

0.35

0.99

1.20

2.9

20250706 23:36:00 *

Metop-C

ASCAT

45.3

34.89

148.93

34.87

148.93

0.14

0.39

***

20250706 18:18:39 *

SSMIS-18

85-92GHz

50.0

34.29

149.10

34.19

149.15

0.24

0.69

1.40

22.4

20250706 10:21:00 *

Metop-A

ASCAT

50.0

33.37

149.58

33.52

149.60

0.17

0.47

***

20250706 07:48:25	GMI	85-92GHz	50.0	32.96	149.58	33.06	149.61	0.15	0.43	1.30	66.9
20250706 07:48:25 *	GMI	37GHz	50.0	33.01	149.76	33.11	149.79	0.11	0.32	0.60	***

20250706 05:52:49

SSMIS-18

85-92GHz

50.0

32.64

149.46

32.60

149.44

0.16

0.47

1.30

52.7

20250705 23:06:00	Metop-A	ASCAT	50.0	32.22	149.20	32.26	149.23	0.17	0.48	***	***
20250705 22:03:26	GMI	85-92GHz	50.0	32.19	149.04	32.31	149.13	0.19	0.52	0.90	77.1
20250705 22:03:26 *	GMI	37GHz	50.0	32.09	149.16	32.21	149.25	0.09	0.25	0.50	***

20250705 18:32:16	SSMIS-18	85-92GHz	50.0	31.85	148.86	31.77	148.77	0.12	0.35	1.10	93.9
20250705 16:17:58	AMSR2	85-92GHz	51.4	31.67	148.65	31.76	148.78	0.14	0.39	0.70	99.4
20250705 16:17:58 *	AMSR2	37GHz	51.4	31.67	148.48	31.76	148.60	0.10	0.29	0.30	***

20250705 11:33:00 *	Metop-C	ASCAT	55.0	31.28	147.94	31.28	147.94	0.15	0.43	***	***
20250705 10:42:00	Metop-A	ASCAT	55.0	***	***	***	***	***	***	***	***

20250705 08:33:26	GMI	85-92GHz	55.0	***	***	***	***	***	***	3.00	***
20250705 08:33:26	GMI	37GHz	55.0	***	***	***	***	***	***	3.00	***

20250705 06:06:06 *

SSMIS-18

85-92GHz

55.0

31.15

146.76

31.14

146.67

0.23

0.64

0.70

30.8

20250705 00:18:00	Metop-C	ASCAT	55.0	***	***	***	***	***	***	***	***
20250704 23:27:00	Metop-A	ASCAT	54.5	***	***	***	***	***	***	***	***
20250704 22:43:26	GMI	85-92GHz	53.9	31.00	146.17	31.02	146.21	0.20	0.57	0.40	67.1
20250704 22:43:26 *	GMI	37GHz	53.9	31.00	146.11	31.02	146.15	0.18	0.51	0.40	***

20250704 18:46:19 *

SSMIS-18

85-92GHz

50.0

31.08

146.02

31.00

145.93

0.14

0.38

0.80

96.1

20250704 11:54:00 *

Metop-C

ASCAT

55.0

30.20

145.29

30.19

145.26

0.15

0.41

***

20250704 06:19:51 *

SSMIS-18

85-92GHz

55.0

29.92

145.14

29.90

145.12

0.23

0.65

0.30

66.3

20250704 00:36:00 *

Metop-C

ASCAT

55.0

29.41

144.64

29.31

144.64

0.14

0.39

***

20250703 19:01:04 *

SSMIS-18

85-92GHz

60.0

29.11

144.71

29.26

144.65

0.33

0.93

0.50

4.4

20250703 16:31:11	AMSR2	85-92GHz	60.0	28.99	144.79	29.10	144.70	0.33	0.93	0.30	23.3
20250703 16:31:11 *	AMSR2	37GHz	60.0	28.64	144.96	28.75	144.88	0.29	0.81	0.60	***

20250703 11:21:00 *

Metop-A

ASCAT

58.9

28.23

145.04

28.25

145.04

0.17

0.49

***

20250703 08:11:27 *

SSMIS-16

85-92GHz

53.7

27.95

145.54

27.99

145.55

0.18

0.51

0.30

79.2

20250703 06:33:17

SSMIS-18

85-92GHz

50.0

***

0.40

***

20250703 00:06:00 *	Metop-A	ASCAT	45.0	26.81	145.12	26.78	145.12	0.15	0.43	***	***
20250702 22:33:26	GMI	85-92GHz	42.6	***	***	***	***	***	***	3.00	***
20250702 22:33:26	GMI	37GHz	42.6	***	***	***	***	***	***	3.00	***

20250702 20:53:23 *

SSMIS-16

85-92GHz

39.8

26.45

145.32

26.44

145.34

0.25

0.70

0.30

9.2

20250702 15:48:51	AMSR2	85-92GHz	35.0	26.58	145.92	26.43	146.09	0.57	1.61	0.90	1.5
20250702 15:48:51 *	AMSR2	37GHz	35.0	26.38	146.03	26.23	146.21	0.25	0.71	0.90	***

20250702 10:54:00 *

Metop-C

ASCAT

34.1

26.05

146.38

26.11

146.33

0.12

0.35

***

20250702 09:03:26	GMI	85-92GHz	32.5	26.01	146.70	25.96	146.74	0.23	0.66	2.00	10.4
20250702 09:03:26	GMI	37GHz	32.5	25.86	146.75	25.81	146.80	0.23	0.64	0.40	***
20250702 08:24:20	SSMIS-16	85-92GHz	32.0	25.86	146.75	25.87	146.75	0.33	0.95	1.00	3.8

20250702 03:41:24	AMSR2	85-92GHz	30.0	25.34	147.11	25.20	147.25	0.27	0.76	0.90	20.8
20250702 03:41:24 *	AMSR2	37GHz	30.0	25.44	147.00	25.30	147.14	0.22	0.63	0.40	***

20250701 23:13:27	GMI	85-92GHz	30.0	25.06	147.39	25.10	147.37	0.31	0.88	0.40	5.7
20250701 23:13:27 *	GMI	37GHz	30.0	24.91	147.66	24.95	147.65	0.26	0.74	1.80	***
20250701 22:51:00	Metop-A	ASCAT	30.0	***	***	***	***	***	***	***	***

Key:

Date/Time: UTC time. If this observation is used in the track it is marked with a "*". If it is used for its own 3-hr window, it is put in bold.

Source/sensor: Satellite source of the analyzed image.

Vmax: Maximum winds listed in the forecast center analysis/forecast, *not* ARCHER.

ARCHER lat/lon: Coordinates of the ARCHER algorithm, valid at the time of the observation. If no center fix could be found, then it is "***".

Geo ref lat/lon: Coordinates of the ARCHER algorithm, valid at the time of the *nearest geo image*.

50% cert. rad.: Radius of the circle (in degrees) that defines the area in which the ARCHER center of rotation is 50% certain. The lower the number, the more certain the position.

95% cert. rad.: Radius of the circle (in degrees) that defines the area in which the ARCHER center of rotation is 95% certain.

Eye diam (deg): ARCHER-resolved eye diameter (in degrees). Green: robust, yellow: less certain, red: not robust.

% cert. of eye: Percent certainty that an eye exists in this image, determined by ARCHER. Currently only available for IR and 85-92 GHz imagery.

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